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Mole fraction of vapour of A above solut...

Mole fraction of vapour of `A` above solution in mixture of `A` and `B(X_(A) = 0.4)` will be `(P_(A)^(@) = 100mm, P_(B)^(@) = 200 mm)`:

A

0.4

B

0.8

C

0.25

D

none of these

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The correct Answer is:
C
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